CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

In triangle ABC
a-b=33
a=33+b ------------1
b-c=18
c=b-18 ------------2
Now in triangle abc by angle sum property
a+b+c=180
33+b+b+b-18=180 (by 1 and 2)
15+3b=180
3b=180-15
3b=165
b=165/3
b=55
Now put value of b in eq. 1 and 2
a-b=33
a-55=33
a=33+55
a=88
b-c=18
55-c=18
c=55-18
c=37
Your answer is:
a=88
b=55
c=37

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ANSWER

A what

Posted by Iqbal Hussain 4 years ago

CBSE > Class 09 > Mathematics

0 answers

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If √196/7× √900/x = 4 Find the value of x.

Posted by Rani ? 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Pratibha Kushwah 4 years ago

30√ 7

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ANSWER

√2 √3 ---------- + ------------ √8+√5 √5+√2

Posted by Krishna Sharma 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Niyatti Niyatti 4 years ago

What to do

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Exercise 8.1 1st question

Posted by Varun Dharne 4 years ago

CBSE > Class 09 > Mathematics

2 answers

Aliza Taufiq 4 years ago

1. The angles of quadrilateral are in the ratio 3 : 5 : 9 : 13. Find all the angles of the quadrilateral. Solution: Let the common ratio between the angles be = x. We know that the sum of the interior angles of the quadrilateral = 360° Now, 3x+5x+9x+13x = 360° ⇒ 30x = 360° ⇒ x = 12° , Angles of the quadrilateral are: 3x = 3×12° = 36° 5x = 5×12° = 60° 9x = 9×12° = 108° 13x = 13×12° = 156°

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Gaurav Seth 4 years ago

1. The angles of quadrilateral are in the ratio 3 : 5 : 9 : 13. Find all the angles of the quadrilateral.

Solution:

Let the common ratio between the angles be = x.

We know that the sum of the interior angles of the quadrilateral = 360°

Now,

3x+5x+9x+13x = 360°

⇒ 30x = 360°

⇒ x = 12°

, Angles of the quadrilateral are:

3x = 3×12° = 36°

5x = 5×12° = 60°

9x = 9×12° = 108°

13x = 13×12° = 156°

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ANSWER

Classify the following as rational or irrational .........0.3796

Posted by M U 4 years ago

CBSE > Class 09 > Mathematics

4 answers

Anjali Joshi 4 years ago

Irrational

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Aaditya Mishra 4 years ago

What's is polynomial

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M U 4 years ago

proof

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Suraj Pratap 4 years ago

Irrational number hai

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ANSWER

How?? to find three irrational no. Between 5/7 and 9/11.

Posted by M U 4 years ago

CBSE > Class 09 > Mathematics

2 answers

M U 4 years ago

Thanks a lot!!! ?

1Thank You

Gaurav Seth 4 years ago

Let us convert 5/7 and 9/11 into decimal form, to get

5/7 = 0.714285... and 9/1 = 0.818181.... .

Three irrational numbers that lie between 0.714285.... and 0.818181.... are:

0.73073007300073….

0.74074007400074….

0.76076007600076….

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ANSWER

2a + 1 = 3 then a =

Posted by Shreyansh Sutariya 4 years ago

CBSE > Class 09 > Mathematics

4 answers

Anjali Joshi 4 years ago

Ans: 1

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Suraj Pratap 4 years ago

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Kashak Jadav 4 years ago

If, 2a+1=3 We want to find value of A 2a=3-1 2a=2 a=2/2 a=1 Value of a=1

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M U 4 years ago

1.......let me proof = See 2a+1=3 ====2a=3-1=====2a=2=====a=2/2 by dividing it. We get, 1

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ANSWER

1+1 =

Posted by Shreyansh Sutariya 4 years ago

CBSE > Class 09 > Mathematics

5 answers

Pragati Singh 4 years ago

0Thank You

Suraj Pratap 4 years ago

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Manyata Joshi 4 years ago

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M U 4 years ago

0Thank You

Shreyansh Sutariya 4 years ago

1Thank You

ANSWER

Write coefficient of x^2 in the polynomial 5x^2+6x+3

Posted by Ayush Singh 4 years ago

CBSE > Class 09 > Mathematics

3 answers

Anjali Joshi 4 years ago

5 is cofficent

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Kashak Jadav 4 years ago

In eqation 5x²+6x+3 coefficients is 5

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Trishla Jain 4 years ago

5 is the coefficient of x² in the polynomial 5x²+6x+3

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ANSWER

How to find number between two irrational numbers

Posted by Sanjana Bharti 4 years ago

CBSE > Class 09 > Mathematics

2 answers

M U 4 years ago

This is just an example Let us convert 5/7 and 9/11 into decimal form, to get 5/7 = 0.714285... and 9/1 = 0.818181.... . Three irrational numbers that lie between 0.714285.... and 0.818181.... are: 0.73073007300073…. 0.74074007400074…. 0.76076007600076….

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Gaurav Seth 4 years ago

Suppose we have two rational numbers a and b, then the irrational numbers between those two will be, √ab. Now let us find two irrational numbers between two given rational numbers.

1. Find an irrational number between two rational numbers 2 – √3 and 5 – √3

Let x be the irrational number between two rational numbers 2 – √3 and 5 – √3. Then we get,
2 – √3 < x < 5 – √3
⇒ 2 < x + < √3 < 5
We see that x + √3 is an irrational number between 2 – √3 and 5 – √3 where 2 – √3 < x < 5 – √3.

2. Find two irrational numbers between two given rational numbers.

Now let us take any two numbers, say a and b. Let x be any number between a and b. Then,
We have a < x < b….. let this be equation (1)
Now, subtract √2 from both the sides of equation (1)
So, a – √2 < x < b – √2……equation (2)
= a < x + √2 < b
Addition of irrational number with any number results into an irrational number. So, x + √2 is an irrational number which exists between two rational numbers a and b.

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What is Constant polynomial

Posted by Tisha Rajour 4 years ago

CBSE > Class 09 > Mathematics

3 answers

M U 4 years ago

A polynomial with degree 0 is called a constant polynomial. Any constant number for example, 3, 4/5, 679, 8.34 are examples of constant polynomials.

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Yogita Ingle 4 years ago

Constant Polynomials : An expression consisting of only constants is called as constant polynomial.
For Example: 7, -27, 3, etc. are some constant polynomials.

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Tisha Rajour 4 years ago

Constant polynomial: A constant polynomial is of the form p(x) = k, where k is a real number. For example, –9, 10, 0 are constant polynomials.

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If AB ||CD,∆APQ=50°and ∆PRD=127°, find x and y.

Posted by Shashank Aryan 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 4 years ago

Question 5. In Fig. 6.32, if AB || CD, ∠ APQ = 50° and ∠ PRD = 127°, find x and y.

Solution: Use property of Alternate interior angles
∠APR = ∠PRD
50° + y = 127°
y = 127° − 50°
y = 77°
use same property of Alternate interior angles
∠APQ = ∠PQR
50° = x
∠ x = 50° and y = 77°

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ANSWER

????? ?????? ?? ??????????

Posted by Chandn Singh 4 years ago

CBSE > Class 09 > Mathematics

3 answers

Rut@J@ $Ingh 4 years ago

False

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Agnes Jimmy 4 years ago

No ,this statement is wrong .numbers can be rational or irrational

2Thank You

Khushi Sawanliya 4 years ago

No, it may be rational or irrational number

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ANSWER

If x raise to power 3 + x raise to power 2 into y raise to power 5 + y raise to power 2 + y ,then the highest degree is , and how?

Posted by Alka Yadav 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Saksham Tripathi 4 years ago

Total votes results for the first 0000

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ANSWER

suppose a box of 10kg is moving towards north with velocity of 10m/s such that it has zero net force not a force of 20 n is exerted on it towards south what is the assertion produced and in which direction

Posted by Jashandeep Kaur 4 years ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Root 10 multiply with root 15

Posted by Anfal Pananghat 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Rashika Maithil 4 years ago

22500

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Where did bepin Babu say he won in October 58

Posted by Abhinandan Dubey 4 years ago

CBSE > Class 09 > Mathematics

3 answers

Shubham Singh 4 years ago

Bepin Babu said that he spent the Durga Puja of October 1958 in Kanpur and he didn’t go to Ranchi at all. He went to Kanpur at his friend's Place in October '58'.

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Gaurav Seth 4 years ago

Answer
Bepin Babu said that he spent the Durga Puja of October 1958 in Kanpur and he didn’t go to Ranchi at all.
He went to Kanpur at his friend's Place in October '58'.

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Samruddhi Khonde 4 years ago

Kanpur

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ANSWER

√6(√3+2(

Posted by Karuna Mishra 4 years ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

A triangle having sides a, b and c. If s-a=4cm, s-b=8 cm and s-c=12 cm, then find the value of a, b and c.

Posted by Ashmit Sharma 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 4 years ago

Answer:

Sides of the triangle are 20 cm, 16 cm, 12 cm

Step-by-step explanation:

Formula used:

If a, b, c are sides of triangle then

s=(a+b+c)/2

Given:

s-a=4 cm

s-b=8 cm

s-c=12 cm

Adding these we get

s+s+s-a-b-c = 24

3s-(a+b+c) =24

3s-2s = 24

s = 24

Now,

s-a=4

24 - a =4

a = 24 - 4 = 20 cm

s-b=8

24 - b = 8

b = 24 - 8 = 16 cm

s - c = 12

24 - c = 12

c = 24 -12 = 12 cm

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ANSWER

If (2, 0) is a solution of the linear equation 2x + 3y = k, then the value of k is

Posted by Samruddhi Khonde 4 years ago

CBSE > Class 09 > Mathematics

5 answers

Samruddhi Khonde 4 years ago

Thanks for answer

1Thank You

Samruddhi Khonde 4 years ago

No I'm not navodayan...and all

1Thank You

Aarushi Erande 4 years ago

•Putting x=2 and y=0 •We get 2×2 + 3×0 = k •So, 4 + 0= k • Hence the answer is, k=4

2Thank You

Satyam Gupta 4 years ago

You are navodayan yes or not

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Satyam Gupta 4 years ago

4 hoga

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ANSWER

The cost of a notebook is twice the cost of pen. Write a linear equation in two variable to represent this statement

Posted by Vandana Bari 4 years ago

CBSE > Class 09 > Mathematics

5 answers

Khushi Sawanliya 4 years ago

Let the cost of notebooks is x And the cost of pen is y So , The linear equation is x = 2y

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Abhinandan Dubey 4 years ago

there! Have questions about your homework? At Brainly, there are 150 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D JOIN US!

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Abhinandan Dubey 4 years ago

Let, the cost of pen be Rs x and Cost of notebook is twice the cost of pen=Rs 2x It's given that cost of notebook = 2× cost of pen Therefore, x=2x x-2x=0 x-2x=0 is the linear equation in two variables.Let, the cost of pen be Rs x and Cost of notebook is twice the cost of pen=Rs 2x It's given that cost of notebook = 2× cost of pen Therefore, x=2x x-2x=0 x-2x=0 is the linear equation in two variables.

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Aarushi Erande 4 years ago

•Let the cost of the notebook be x and the cost of the pen be y •Now, the equation would be x = 2y. now putting any value for x or y we will get the coordinates. • Now you can draw the graph with this equation.

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Samruddhi Khonde 4 years ago

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ANSWER

Rationalise the denominator of * Option 1 Option 2 Option 3

Posted by Vivek Vallyapur 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Vivek Vallyapur 4 years ago

Rationalise the denominator of * Option 1 Option 2 Option 3

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ANSWER

Factorise- 3x-4^2

Posted by Ananya Sharma 4 years ago

CBSE > Class 09 > Mathematics

1 answers

Ananya Sharma 4 years ago

12345

1Thank You

ANSWER

One eqilateral triangle of side 2cm. What is the area of this triangle by herons formula?

Posted by Shravani Walke 4 years ago

CBSE > Class 09 > Mathematics

2 answers

Arpit Agnihotri 4 years ago

Sides of equilateral triangle =2cm,2cm,2cm If a=2cm , b= 2cm and c=2 cm Then, s(semi perimeter)=(2+2+2)/2 =6/2 =3cm =s Now by, heron's Formula area of a triangle=√s(s-a)(s-b)(s-c) =√3(3-2)(3-2)(3-2) =√3(1)(1)(1) =√3 cm² Therefore area of equilateral triangle with sides 2cm each is √3cm².

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Gaurav Seth 4 years ago

A n s w e r:

By Herons formula,

Area of equilateral triangle=√3a²/4

Given,

a= 2cm

Therefore,

Area of the triangle

= (√3a²/4) cm²

= (√3 × 2²/4) cm²

= (4√3 /4) cm²